# Migrate in between versions

**URL:** <https://www.ruby-forum.com/t/migrate-in-between-versions/126467>\
**Category:** Rails\
**Created:** [January 18, 2008, 3:16pm UTC](https://www.ruby-forum.com/t/migrate-in-between-versions/126467 "2008-01-18T15:16:48Z")\
**Posts on this page:** 4\
**Page:** 1

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**Author:** ![mokkai](https://www.ruby-forum.com/letter_avatar_proxy/v4/letter/m/c2a13f/32.png) [@mokkai](https://www.ruby-forum.com/u/mokkai)\
**Post date:** [January 18, 2008, 3:16pm UTC](https://www.ruby-forum.com/t/migrate-in-between-versions/126467/1 "2008-01-18T15:16:48Z")

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how to migrate in between versions ?  
suppose if i have version 1-50 .

if i want to revert from 30-40 then what should i do ?

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**Author:** ![mokkai](https://www.ruby-forum.com/letter_avatar_proxy/v4/letter/m/c2a13f/32.png) [@mokkai](https://www.ruby-forum.com/u/mokkai)\
**Post date:** [January 18, 2008, 6:00pm UTC](https://www.ruby-forum.com/t/migrate-in-between-versions/126467/2 "2008-01-18T18:00:20Z")

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Pokkai D. wrote:

> how to migrate in between versions ?  
> suppose if i have version 1-50 .
> 
> if i want to revert from 30-40 then what should i do ?

I assume you know about the VERSION option you can pass into rake  
db:migrate? You can rake you db down to version 30 then up to 40…but  
what does this accomplish?

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**Author:** ![mokkai](https://www.ruby-forum.com/letter_avatar_proxy/v4/letter/m/c2a13f/32.png) [@mokkai](https://www.ruby-forum.com/u/mokkai)\
**Post date:** [January 18, 2008, 6:01pm UTC](https://www.ruby-forum.com/t/migrate-in-between-versions/126467/3 "2008-01-18T18:01:14Z")

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Read the manual for rake, or try this, this will migrate you to  
version 30

rake db:migrate VERSION=30

On Jan 18, 3:16 pm, Pokkai D. [removed\_email\_address@domain.invalid](mailto:removed_email_address@domain.invalid)

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**Author:** ![mokkai](https://www.ruby-forum.com/letter_avatar_proxy/v4/letter/m/c2a13f/32.png) [@mokkai](https://www.ruby-forum.com/u/mokkai)\
**Post date:** [January 19, 2008, 5:01pm UTC](https://www.ruby-forum.com/t/migrate-in-between-versions/126467/4 "2008-01-19T17:01:27Z")

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Glenn Gentzke wrote:

> Pokkai D. wrote:
> 
> > how to migrate in between versions ?  
> > suppose if i have version 1-50 .
> > 
> > if i want to revert from 30-40 then what should i do ?
> 
> I assume you know about the VERSION option you can pass into rake  
> db:migrate? You can rake you db down to version 30 then up to 40…but  
> what does this accomplish?

i want to chanhe the migration file for those VERSION only 30-40

and i have some datas in 40-50 tables…

so i want to revert only 30-40 then i should create 30-40 with changes.

thats all